Pressure gauge attachment



Jan. 15, 1935. I H FOX n gsmz PRESSURE GAUGE ATTACHMENT Filed. Oct. 15,1930 2 Sheets-Sheet l INVENTOR CHARLES H. FOX.

A TTORNEY Jan. 15, E935. c. H. FOX 1,987,929

PRESSURE GAUGE ATTACHMENT Filed Oct. 15, 1950 2 Sheets-Sheet 2 INVENTORCHARLES h. FOX.

A TTORNE Y BYJMM Y JNM 55 stop plug '18. This opening leads into thepas- Patented Jan. 15, 1935 t I UNITED STATES PATENT OFFICE PRESSUREGAUGE ATTACHMENT Charles H, Fox, Cincinnati, Ohio, assignor to TheAhrens-Fcx Fire Engine Company, Cincinnati, Ohio, a. corporation of OhioAp lication mm 15, 1930, Serial No. 488,984

9 Claims. (01. 73-s1) This invention relates to apparatus for pre- Inthe present instance it is shown in connecventing the Ireezing or waterpressure gauges, tion with a water pipe 1, having the usual end and hasfor its obiect the provision of means to flange 2 by which it isattached to an air champrevent water gauges used in connection with her3 which has a flange 4 by which it is at- I flre engine pumps ireezlng.tached to the flange of the water pipe by means 5 While this apparatusis particularly adapted of bolts 5 extending through the flanges. In thefor use in connection with the rotary type of present instance insteadof the two flanges 2 and fire pump, it may be used with other types of 4being directly attached to each other there is pumps. interveningbetween these two flanges, and sep- It is particularly the object ofthis invention aratingthe pipe from the tank, an annular disc 0 toprovide, in connection with the water pipe, a 6 which has an openingtherein in line with the detachable gauge for indicating the pressure ofopening of the pipe and the opening into the the water in the pipe andmeans for preventair chamber. ing the gauge from freezing. Extendingfrom one side of the annular disc I 18 It is-particularly the object ofthis invention is an arm 7, which has extending therethrough to provide,in connection with a water pipe and. a passageway 9. This passagewayintersects an air pressure chamber, means for indicating two otherpassageways, one extending vertically the pressure of the water andadapted to conthrough a boss 8 on the annular disc extending tain ananti-freezing liquid so that the indiinto the opening therein. Thisboss, when the 20 cator will operate at all conditions of temperapartsare assembled as shown in Figure 3, ex- 20 ture without freezing, and inorder to accomtends upwardly within the mouth part of the plish thispurpose there is provided, in connecair chamber and supports a pipe,later to be tion with the pressure gauge, means for supdescribed. plyingthereto an anti-freezing fluid or liquid In the outer end of the arm '7is a valve mem- 26 and connecting the fluid therein to the air ber 10held in position by means of a lock nut chamber so that the condition01' the fluid in 11. This valve is used to regulate the opening the airchamber is responsive to the pressure of in the outer end of the arm 7so that the pasthe air in the air chamber. sage of a non-freezing fluidthrough the pas- It is also an object at this invention to prosageway 9may be controlled. In the outer end 30 vide, in connection with ananti-freezing pres of the arm 7 there is a hole 12, in which a pres- 30sure gauge, an oil pump in connection theresure gauge 13 is screwed.This pressure gauge with for the purpose of coating "the interior is ofthe usual type and is operated by pressure surface of the water pumpwith an oil conpassing in the form of a'fluid or gas through tained inthe water pressure gauge. the passageway 9 up into the pressure gauge 36These and other advantages will appear from member. The flow or passageof the fluid the description taken in connection with the through thepassageway 9 into the pressure drawings. gauge member is controlled bythe valve 10.

Referring to the drawings: Extending upwardly from the inner end of theFigure 1 is a 1301:) plan view of the assembled passageway 9 and locatedin the vertical orifice 40 apparatus. or hole in the boss 8 is a pipe14. The upper Figure 2 is a side elevation thereof. end of this pipe isbent down as shown in Figure Figure 3 is a vertical section through theair 3. This pipe serves at least two purposes. One chamber and thepassageway leading from the is to form a means for the passage of alubrii h mb ,t -th re gauge, showing how cant to the'walls of the pipeand'the walls of 46 the pressure gauge is supported in connection theair chamber and to the water pump. It also with the airehamber. servesto retain the anti-freezing liquid in the Figure 4 *is a se tion n thelin H f Figpressure gauge member so that there is always we 2 looking inthe -dinectionroi the arrows. present in this member the anti-freezingliquid,

While this apparatus is particularly adapted uc as 60 for use in{connection with dire engines, it may There is also extending from theannular disc be used in connection with and for the .deter- 6 a secondarm 15, which has a passageway 16 mination of water pressure inconnection therethrcugh leading from the opening or cavity with variousapparatus. apparatus is easily in the boss 8 to the hub end 1'7 of thearm. In

detached and may be attached to different the end of the arm is anopening closed by a 5 sageway 16. The passageway 16 merges into avertical passageway which extends upwardly in the hub 17 and into thebody member 19 of the anti-freezing liquid carrying part of theapparatus.

Extending upwardly from the body member and in line with the passagewayin the hub 17 is a pipe 21, which has on the upper end thereof a. light22. Extending at a right angle to the vertical passageway in the hub 17is another passageway for the admission of a non-freezing liquid intothe air chamber. In the end of this passageway remote from the hub 17 isa pump plug 23 in which works the pump 24 for pumping the liquid intothe passageways and into the pipe 14, and also into the pressure gauge.The liquid pumped is stored in an oil reservoir 20, located on top ofthe body member, which has an opening into the pump passageway for thedischarge of the liquid through the passageway 16 into the passageway 9and into the pressure gauge and also into pipe 14. In order to regulatethe passage of the liquid from the reservoir into and through thepassageway 16 there is provided a cut-off valve 25.

This apparatus is composed essentially of three parts, first, asupporting part comprising an annular disc with two arms extendingtherefrom, and each having a passageway therethrough. Second, on theouter end of one of these arms and communicating with the passagewaytherein is a pressure gauge removably mounted thereon. Third, on theouter end of the other arm is a fluid containing and fluid pumpingapparatus for forcing fluid from the reservoir into the pressure gaugemember and into the pipe 14. The parts are shown assembled in Figure 2.

As shown in this Figure 2, the pressure of the water in the pipe 1causes a compression of the air in the air chamber 3. This. increasedpressure in the air chamber causes an increased pressure on the fluid orliquid in the pipe 14, and causes a resulting action in the gauge member13. Any increase or decrease of pressure in the air chamber will beregistered in the gauge member by means of the liquid in the differentpassageways, and the pipe 14.

By the use of this apparatus, filled with some non-freezing liquid, thegauge works at all seasons of the year regardless of low temperature. Bymeans of the liquid reservoir and pump a new supply of liquid may beforced into the passageways and pipe 14, and into the pressure gauge.This liquid may also be used for lubricating purposes, and for thispurpose the liquid will pass out at the down-turned end of the pipe 14.

This apparatus may be removed from the assemblage, as shown in Figure 3,by merely removing the nuts from the bolts so that the disc may be takenout, and either a new one may be placed therein or the parts assembledwithout the intervening disc member 6. This apparatus can be assembledin any connection, such as that shown in Figure 3.

I desire to comprehend within my invention such modifications as may beembraced within my claims and the scope of my invention.

Having thus fully described my invention, what I claim is new and desireto secure by Letters Patent, is:

1. In an anti-freeze pressure gauge, in combination with a water pipeand an air chamber, a gauge member. an arm for supporting the gaugemember having thereon an annular extension adapted to fit between saidpipe and said chamber, said extension having a passageway leading fromthe gauge member, and a pipe extending from said passageway into saidair chamber for conducting pressure into said gauge member.

2. In an anti-freeze pressure gauge, in combination with a water pipeand an air chamber, an annular disc adapted to fit between said pipe andthe chamber, said disc having a boss with a cavity therein, an arm onsaid disc, a gauge member on'said' arm, said arm having a passagewayleading from the gauge member to said cavity, and a pipe fitting in saidcavity and extending into-said chamber whereby pressure is conveyed tothe gauge member.

3. In an anti-freeze gauge, in combination with a water pipe and an airchamber, a disc member having a central opening therein and a boss insaid opening, said disc member being adapted to fit between the pipe andthe chamber, said boss having a cavity therein, a gauge member on saiddisc member having a passageway to said cavity, means for forciblysupplying a non-freezing fluid to said cavity, and a pipe extending fromsaid cavity into said chamber.

4. In an anti-freeze pressure gauge, in combination with a water pipeand an air chamber, an annular body member having an opening thereinforming a connectionbetween the pipe and the chamber, a gauge member onsaid body member having a passageway leading into said opening, a fluidreservoir on said body having a passageway leadingv into said opening,said passageways having a common exit into said opening, a pipe leadingfrom said exit into the chamber, and means connected to said reservoirto force the fluid from said reservoir into said gauge member andsaid'last-named pipe.

5. In a gauge, a body member having a pair of arms thereon, each armhaving a passageway that terminates in the end of the other passagewayin the body, a gauge member supported on one of said arms and havingcommunication with the passageway therein, and a fluid reservoirsupported on the other arm and having communication with the passagewaytherein.

6. In a gauge, a body member having a pair of arms thereon, each armhaving a passageway that intersects the passageway in the other arm, agauge member supported on one of said arms and having communication withthe passageway therein, a fluid reservoir supported on the other arm andhaving communication with the passageway therein, and means to force thefluid from the reservoir through the passageways into the gauge member.

7. In a gauge, a body member having a pair of arms thereon, each armhaving a passageway that intersects the passageway in the other arm, agauge member supported on one of said arms and having communication withthe passageway therein, a fluid reservoir supported on the other arm andhaving communication with the passageway therein, means to force thefluid from the reservoir through the passageways into the gauge member,and a pipe extending up from the intersection of the two passageways.

8. In combination with a water pipe, of an air chamber in communicationwith the pipe, a pressure gauge, means providing communication betweenthe pressure gauge and the air chamber, and pump means to supply oil tosaid communication means between the gauge and serve as a passageway forlubricant and as an antifreezing liquid retainer, an oil reservoirconnected thereto and to the gauge, a valve for controlling saidreservoir, a pump for actuating fluid from said reservoir-to the gaugeand to the air chamber, and means for controlling the amount of oil sodelivered to the gauge.

CHARLES H. FOX.

